JPS62221994A - Supporting system for marine propeller - Google Patents

Abstract

PURPOSE:To improve the universality of a supporting system, by making a supporting point of an arm supporting a propeller body on the support bracket attached to the hull variable and making a tilting locus of the propeller body also variable. CONSTITUTION:A swivel bracket 3 is supported on a clamp bracket 2 via both upper and lower arms 7 and 9. An end of the upper arm 7 is rotatably connected to an upper part of the clamp bracket 2 by a support pin 9, while the other end is rotatably connected to an upper part of the swivel bracket 3 by a support pin 10 as well. On the other hand, one end of the lower arm 8 selects one of two support holes 13 formed in the clamp bracket 2 and is rotatably supported in a pivotal manner together with an intermediate arm 12 by a support pin 11, while the other end is rotatably connected to a lower part of the swivel bracket 3 by a support pin 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a support device for a marine propulsion device suitable for a propulsion device such as an outboard motor or an inboard/outboard motor.

(Prior art) In a support device for a marine propulsion device, the main body of the propulsion device is supported via an arm on a support bracket attached to the stern of the ship. There is something that tilts the main body.

This tilting of the propulsion machine body is performed by a tilt device and a trim device. For example, trim up/down operations adjust the racing attitude to changes in the water surface load without sacrificing engine performance, and provide the best trim with the optimal trim. The aim is to achieve cruising performance, economical fuel consumption, and a comfortable ride.

(Problem to be solved by the invention) By the way, the optimal locus for tilting the propulsion unit varies depending on the size of the ship, whether it is for high speed or low speed, the shape of the bottom of the ship, etc., but currently, it does not matter what type of ship it is mounted on. You can't change the trajectory.

For this reason, there is a need for a versatile support device that is capable of supporting the propulsion unit so that it can be tilted in a manner suitable for each ship.

This invention has been made in consideration of these points, and is simplified.
The object of the present invention is to provide a support device for a marine vessel propulsion unit that has a ft structure and can obtain a tilting locus of the propulsion unit body that corresponds to each vessel.

(L stage for solving the problems) In order to solve the problems in 1) In a support device for a marine propulsion device that rotates using a support point of a bracket as a fulcrum and tilts the propulsion device body, the support point of the arm described in rif can be changed, and the tilting locus of the propulsion device body described in +iif is made variable. It is characterized by

(Function) In this invention, the main body of the propulsion unit is tilted to the support bracket.
For the first supporting arm, the support point of the support bracket changes depending on the ship. By changing the support point of this arm, the tilting locus of the propulsion unit body changes, and the optimum tilting locus according to the ship can be determined.

(Embodiments) Hereinafter, embodiments of the present invention will be described in detail based on the accompanying drawings.

Fig. 1 is a side view of a ship to which the present invention is applied, Fig. 2 is a basic configuration diagram of the support device, Fig. 3 is a diagram showing the support device in a fully trimmed-up state, and Fig. 4 is a specific configuration of the support device. Figure 5 is a hydraulic piping diagram, and Figure 6 is an operating circuit diagram.

In FIG. 1, a clamp bracket 2 as a support bracket is attached to the stern of a hull 1, and a swivel bracket 3 is supported on this clamp bracket 2. A steering shaft (not shown) is rotatably supported on the swivel bracket 3, and an outboard motor main body 4, which is a propulsion device, is supported on the steering shaft.

An internal combustion engine (not shown) is mounted in a cowling 5 at the bottom of the outboard motor main body 4, and the output of the internal combustion engine can be transmitted via a drive shaft to a propeller 6 provided at the bottom.

The swivel bracket 3 is as shown in FIG.
It is supported by a clamp bracket 2 via a seventh arm 7 and a lower arm 8. An end of the upper arm 7 is rotatably pin-coupled to the lower part of the clamp bracket 2 by a support pin 9, and the other end is rotatably pin-coupled to the lower part of the swivel bracket 3 by a support pin 10.

The end of the lower arm 8 is secured by the support pin 11.
The intermediate arm 12 is rotatably supported by one of the two support holes 13 formed in the clamp bracket 2, and the other end is rotated to the lower part of the swivel bracket 3 by a support pin 14. movably pin-coupled.

Although two support holes 13 are formed, a plurality of support holes 13 may be formed and can be selected depending on the ship, and the formation positions are formed on the circumference around the support pin 14.

Since the support holes 13 are formed circumferentially around the support pin 14, no matter which support hole 13 the support pin 11 is selected to support the lower arm 8 and the intermediate arm 12, the lower arm 8 and the intermediate arm 12 can be supported. At the initial position of the arm 8, the position of the support pin 14 connected to the swivel bracket 3 does not change. Therefore, the initial position of the tilting locus of the outboard motor body remains unchanged.

A tilt device is provided between the clamp bracket 2 and the swivel bracket 3. One end of the tilt cylinder 15 of this tilt device is rotatably coupled to the clamp bracket 2 by a support pin 20, and the tip of a tilt rod 16 provided at the other end of the tilt cylinder 15 is supported by the seventh arm 7. They are rotatably connected via a bin 17.

Further, the intermediate arm 12 is provided with a trim device. One end of the trim cylinder 18 of this trim device is rotatably coupled to the intermediate arm 12 by a support bin 21, and the tip of a trim rod 19 provided at the other end of the trim cylinder 18 is connected to the intermediate arm 12 via the support bin 14. It is rotatably connected to the -F end of the swivel bracket 3.

A stopper 22a is provided on the lower side of the clamp bracket 2, and a stopper 22b is provided on the side of the swivel bracket 3 of the clamp bracket 2.

The lower side of the support part of the trim cylinder 18 of the intermediate arm 12 contacts this lower stopper 22a to regulate the position of the intermediate arm 12 in the r direction, and the E stopper 22b contacts the support part 1- side of the trim cylinder 18 of the intermediate arm 12. This makes contact with the intermediate arm 12, thereby regulating the position of the intermediate arm 12.

1. The two support holes 13 of the clamp bracket 2 are the supports I,'? of the upper arm 8. It is formed to have a circumference F around the pin 14, and the F arm 8 and the intermediate arm 12 are supported by the support pin 11 by selecting one of the support holes 13.

For example, when the support bottle 11 is inserted into the upper support hole 13,
The rotation fulcrum of the F arm 8 is the support point A, and the swivel bracket 3 moves up and down in a trajectory a by the expansion and contraction of the tilt rod 16 and the trim rod 19. Also,
When the support pin 16 is inserted into the lower support hole 13, the rotation fulcrum of the F arm 8 becomes the support point B, and the swivel bracket 3
It traces a trajectory up and down.

Trim-up is performed by extending and contracting the trim rod 19 while the intermediate arm 12 is in contact with the stopper 22a. As the trim rod 19 expands and contracts, the upper arm 8 rotates about the support bin 11, which causes the swivel bracket 3 to move downward L, and the upper arm 7 to rotate in conjunction.

The 3rd FA shows a fully trimmed up state in which the trim rod 19 is fully extended, and the trim rod 19 shown in FIG.
3 from the lowest position of the swivel bracket 3 that does not operate.
The trim area is up to the fully extended position of the trim rod 19 shown in the figure.

Then, when the tilt rod 16 is fully extended, the second
The intermediate arm 12 shown by imaginary lines in the figure comes into contact with the toss stopper 22b and enters a full tilt-up state, and the range from the full trim-up position to this position is a tilt region.

The if degree side support hole 13 and the F side support hole 13 are selected depending on the size of the ship, high speed, low speed, bottom shape, etc., and by changing the support hole 13, the optimum tilting of the propulsion unit can be achieved. A trajectory can be obtained.

A further 31 examples of this support device are shown in FIGS. 4 and 5.

The clamp bracket 2 is attached to the lead JC of the hull 1 by stud bolts 2a, and the clamp bracket 2 is equipped with a hydraulic drive device 2 that drives a tilt device and a trim device.
3 are provided.

As shown in FIG. 5, this hydraulic drive device 23
4 to the tilt cylinder 15 and via a hose 25 to the trim cylinder 18, respectively, so that the tilt rod 16 and the trim rod 19 can be expanded and contracted. A lead wire 26 of the hydraulic drive device 23 is connected to the internal combustion engine side, and is controlled by a control device provided on the internal combustion engine side.

1 The lever 27 of the trim sender 27 is used to move the near arm 7.
The trim angle of the propulsion unit 4 is detected by the trim sender 27. The lead wire 28 of the trim sender 27 and the lead wire 26 of the hydraulic drive device 23 pass through the first arm 7 and are supported by a lead wire holder 29 somewhere along the way. This gives us a lead of 1! +126.28 can be easily routed, and the lead wire 26.28 does not get caught in the operating part.

A plate-shaped guide member 30 is screwed to the clamp bracket 2 at three points between the front foot stopper 22a and the toe stopper 22b. This guide member 30 is made of synthetic resin and serves as a guide for the intermediate arm 12 when the propulsion device is moved up and down.

Furthermore, a clamp spacer 22c is provided on the clamp bracket 2 above the hydraulic drive device 23, and the L arm 7
A1'L positioning in the lateral direction is performed.

FIG. 6 shows the operating circuit of the face tilt device and trim device.

31 is a reservoir that allows the hydraulic fluid to be stored. 32 is a hydraulic pump; 33 is an opening/closing device; this opening/closing device 33 has a shuttle piston 34, a first check valve 35, and a second check valve 36;
A first shuttle chamber 37 and a second shuttle chamber 38 are defined by the first and second checks 35 and 36.

The first shuttle chamber 37 communicates with a first chamber 40 of the tilt cylinder 15 through a conduit 39 and with a first chamber 42 of the trim cylinder 18 through a conduit 41. The second shuttle chamber 38 communicates with the second chamber 44 of the tilt cylinder 15 through a conduit 43, and also has a check valve. 45 and reverse 1 to fi-
The trim sill 18 communicates with the two chambers 48 through a conduit 47 with 46 .

A free piston 49 and a piston portion of the tilt trot 16 are slidably fitted into the tilt sill fern 15, and the piston portion is provided with an absorber consisting of a check valve 50 and a check valve 51.

A free piston 52 and a piston portion of the trim rod 19 are slidably fitted in the trim cylinder 18, and the piston portion is provided with an absorber formed of a throttle hole 53.

a pipe line 54 that communicates the hydraulic pump 32 and the reservoir 31;
55 is connected to reverse market p56.57.

This check valve P56 prevents the tilt rod 16 and trim rod 19 from reaching their maximum retracted positions when the outboard motor main body 4 is tilted down or trimmed down. 1 room 4
When oil is no longer returned to the hydraulic pump 32 from the reservoir 31, the hydraulic pump 32 is opened to supply hydraulic fluid from the reservoir 31 to the hydraulic pump 32 if the hydraulic pump 32 is still operating.

In addition, when the outboard motor main body 4 is tilted up or trimmed up, the reverse 1 valve 57 changes the volume inside the tilt cylinder 15 and the trim cylinder 18 to the volume at which the tilt rod 16 and the trim rod 19 exit from their respective cylinders. The amount increases, and the circulating fluid of the working fluid runs out, so it opens and flows from the reservoir 31 to the hydraulic pump 32!
It is designed to compensate.

The pipes 39 and 41 are connected to the reservoir 31 via the first chamber relief valve 58, and the pipe 55 is connected to the second chamber relief valve [59
It is connected to the reservoir 31 via.

The pipe line 47 is connected to the reservoir 31 via a check valve 60, and a leaf valve 6 is provided between the pipe line 43 and the pipe line 39.
1 is connected.

By opening this moving leaf valve 1.61,
Tilt cylinder! 5's first chamber 4o and second chamber 48 are communicated with each other, and the tilt rod 16 is moved to L! Extend d+ with 1IIJ operation
-+ Becomes Dingou.

Next, the operation of this embodiment will be explained.

Attach the outboard motor body 4 to the clamp bracket 2? When loading, #l) The support pin 11 is inserted into either of the two support holes 13 formed in the clamp bracket 2 depending on the vessel to pivotally support the arm 8 and the intermediate arm 12.

Now, if the support bottle 11 is pivoted in the support hole 13 on the E side, the support point A will be selected from the support points A and B. The selection of the support points A and B depends on, for example, the size of the vessel, whether it is for high speeds or low speeds, the shape of the bottom of the ship, etc., to achieve the best sailing performance, economical fuel consumption, and comfortable ride. The tilting trajectory is 1'', I.

Then, when the hydraulic pump 32 rotates normally, Ill jlj
The liquid flows to the first shuttle chamber 37 of the opening/closing device 33, and the shuttle piston 34 moves to the left in FIG.
Check if, press 36 to open. On the other hand, the switchgear 3
The hydraulic fluid flowing into 3 pushes open the first check valve 35,
It is fed under pressure to the first chambers 40, 42 of the tilt cylinder 15 and the trim cylinder 18 through the conduits 39, 41, thereby lengthening the tilt cylinder 16 and the trim rod 19 by one length.

The hydraulic fluid in the second chamber 44 of the tilt cylinder 15 is supplied to the pipe 4
3, the hydraulic fluid in the second chamber 48 of the trim cylinder 18 returns to the hydraulic pump 32 via the second shuttle chamber 38 of the opening/closing device 33 via line 47, and via line 55.

As a result, as shown in FIG. 3, the trim cylinder 18
When driven, the trim rod 19 extends and the upper arm 8
rotates counterclockwise about the support pin 11 as a fulcrum. Thereby, the upper arm 7 or the support pin 9 is used as a fulcrum, and the swivel bracket 3 is rotated counterclockwise using the support pin 0 of the upper arm 7 as a fulcrum, thereby performing trim-up.

When the tilt rod 16 of the tilt cylinder 15 extends, the upper arm 7 rotates counterclockwise about the support pin 9 to lift the swivel bracket 3 to the E position. Due to this rotation of the upper arm 7, the upper arm 8 and the intermediate arm 12 follow and rotate counterclockwise about the support pin 11, and the trim cylinder 18. The trim cylinder rod 19 also moves in the same manner. At this time, the trim rod 19 extends from the trim cylinder 18, thereby tilting up the outboard motor main body 4.

At this time, the limit position of the tilt-up is restricted by the intermediate arm 12 coming into contact with the L stopper 22b.

Further, when the hydraulic pump 32 reverses, the discharged liquid flows to the second shuttle chamber 38 of the opening/closing device 33, and the shuttle piston 3
4 moves to the right in Figure 6 and performs the first check 'J
f. Push open 35. The hydraulic fluid flowing into the opening/closing device 33 pushes open the second check valve 36 and passes through the pipes 43 and 47 to the tilt cylinder! 5 and the second trim cylinder 18
It is pumped into chambers 44, 48, causing tilt rod 16 and trim rod 19 to retract.

At this time, the working fluid in the first chamber 40 of the tilt cylinder 15 is supplied to the first chamber 40 of the trim cylinder 18 via the pipe line 39.
The second working fluid returns to the first shuttle chamber 37 of the opening/closing device 33 via the pipe line 47 and to the nl+l heavy pressure pump 32 via the pipe line 54.

As a result, the upper arm 7 rotates counterclockwise about the support pin 9, lowering the swivel bracket 3 to the F position. This rotation of the upper arm 7 causes the lower arm 8 and the intermediate arm 12 to rotate clockwise about the support pin 11, and the intermediate arm! The end of the trim rod 2 contacts the dost collar 22a to regulate the position, the trim rod 19 expands and contracts, the swivel bracket 3 returns to its initial position, and the outboard motor main body 4 enters the tilt-down state.

Furthermore, when the outboard motor main body 4 is in the trim-up state, when the trim rod 19 of the trim cylinder 12 is extended or contracted, the upper arm 8 rotates counterclockwise about the support pin 11 as a fulcrum. Therefore, the swivel bracket 3 in the trimmed-up state rotates clockwise about the support pin 10 connected to the first arm 7 as a fulcrum, and enters the trimmed-up state.

At this time, the upper arm 8 is pivotally supported by the F-side support hole 13, and operates while drawing a tilting locus a as shown by the imaginary line in FIG. 2 with the support point A as a fulcrum.

Then, pull out the support pin 11 of this upper arm 8 from the L side support hole 13 of the clamp bracket 2.

When the upper arm 8 is pivoted in the F-side support hole 13, the pivot point of the upper arm 8 moves to the support point B. Therefore, the upper arm 8 traces a tilting trajectory by tilting and trimming operations by the tilting device and the trimming device.

This removal operation of the support pin 11 is performed from the outside of the clamp bracket 2, and assembly requires eight steps.

FIG. 7 shows another embodiment.

In this embodiment, support holes 13a are formed in the clamp bracket 2 at 3 TAI locations on a circumference -F centered on the support pin 14 of the lower arm 8, and the lower arm 8 is supported pivotally by the support pin 11 in either of these holes. It is now possible to do so. As a result, [arm 8 is at support point A].

One of B and C is used as a pivot point, and the upper arm 8 forms tilting trajectories a, b, and c according to support points A, B, and C.

Further, support holes 13b are formed at three locations in the L portion of the clamp bracket 2, and the circumference is centered around the support pin 10 of the upper arm 7. is the support point.

It is set as E, F. By selecting one of these support points, E, and F, and pivotally supporting the first arm 7 with the support pin 9, the first arm 7 draws corresponding tilting trajectories d, e, and f.

In this way, by arbitrarily selecting the fulcrums of the lower arm 7 and the lower arm 8, it is possible to adjust the ship size and high speed.

It is possible to perform trim up/down and tilt up/down suitable for low speeds or the shape of the bottom of the ship.

FIG. 8 shows a quick trim down circuit added to the operating circuit shown in FIG. 6.

The quick trim down circuit 6z is connected between the conduit 47 and the conduit 39. This quick trim down circuit 62 is connected to the piston 63. The check valve F64 connects the pipe line 39 and the pipe line 47 to the first part of the trim cylinder 18.
The hydraulic fluid from the chamber 42 to the reservoir chamber 31 is cut off, thereby speeding up the down speed of the trim rod 19.

Note that only the upper arm 7 of the embodiment described above has a support point of 1i1.
It may be configured to change iJ. Further, although the support pins 9.11 of the upper arm 7 and the lower arm 8 are directly supported by the clamp bracket 2, they may be supported indirectly via a bracket or the like.

Roughly speaking, the number and position of the 11 supporting points of the upper arm 7 and the ten-arm 8 can be set to 0 depending on the type of ship to which the upper arm 7 and the upper arm 8 are attached.

It is also applicable to a support device that is responsible for only either a trim device or a tilt device.

(Effects of the Invention) As described above, this invention makes the support point of the arm that supports the propulsion device main body variable on the support bracket attached to the hull, and the tilting locus of the propulsion device main body is made variable. A suitable tilting trajectory can be obtained for each ship,
The versatility of the support device is increased and manufacturing costs can be reduced.

[Brief explanation of drawings]

Figure i1 is a side view of a ship to which this invention is applied, Figure 2 is a basic configuration diagram of the support device, Figure 3 is a diagram showing the support device in a fully trimmed-up state, and Figure 4 is a specific configuration diagram of the support device. , FIG. 5 is a hydraulic piping diagram, FIG. 6 is an operating circuit diagram, FIG. 7 is a JL physical configuration diagram of another support device, and FIG. 8 is an operating circuit diagram of another embodiment. 2.-Clamp bracket 3.--Swivel bracket 4.--Outboard motor body 7-1.-Arm 8.-F arm 9.10, 11.14-.Support pins 13.13a, 13b.--Support hole 15 - Tilt cylinder 16 Tilt rod 18 Trim cylinder 19 Trim rod Patent applicant Koden [Gyo Co., Ltd. Fig. 2 Fig. 3 Fig. 6 Fig. 7r:4 Fig. 3

Claims (4)

[Claims] (1) Support for a marine propulsion device in which the main body of the propulsion device is supported by a support bracket attached to the stern via an arm, and the arm rotates about the support point of the support bracket as a fulcrum to tilt the main body of the propulsion device. 1. A support device for a marine vessel propulsion device, characterized in that the support point of the arm is variable, and the tilting locus of the propulsion device body is variable. (2) Said arm is composed of an upper arm and a lower arm, and the support point of at least one of the upper arm and the lower arm is changeable. Machine support device. (3) The supporting device for a marine vessel propulsion device according to claim 1, wherein the support point of the arm is set so that the initial position of the tilting locus of the propulsion device body does not change. (4) The support point of the arm is selected from a plurality of support holes formed in the support bracket, and support is provided by inserting a support pin into the support hole. Support device for ship propulsion equipment.